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Qin C, Guo Y, Seo J, Shuai Y, Lee J, Lee BJ. Absorption characteristics of a metal-insulator-metal nanodisk for solar thermal applications. OPTICS EXPRESS 2020; 28:15731-15743. [PMID: 32403594 DOI: 10.1364/oe.393351] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Accepted: 05/02/2020] [Indexed: 06/11/2023]
Abstract
Due to their ability to confine light in a sub-wavelength scale and achieve coherent absorption, plasmonic nanostructures have been intensively studied for solar energy harvesting. Although nanoparticles generating localized surface plasmon resonance (LSPR) have been thoroughly studied for application in a direct absorption solar collector (DASC), nanoparticles exciting magnetic polaritons (MP) for use in a DASC have not drawn much attention. In this work, we report a metal-insulator-metal (MIM) nanodisk that can excite MP peaks apart from the LSPR in the solar spectrum. It was found that the MIM nanodisk generates a broader and relatively more uniform absorption band compared to a pure metallic nanodisk. The MP peaks were also found to cause less significant scattering compared to those associated with the LSPR. We finally showed that the peaks induced by the MIM nanodisk are highly tunable by varying the particle dimensions, making the proposed MIM nanodisk a potential candidate for solar thermal applications.
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Seo J, Jung PH, Kim M, Yang S, Lee I, Lee J, Lee H, Lee BJ. Design of a Broadband Solar Thermal Absorber Using a Deep Neural Network and Experimental Demonstration of Its Performance. Sci Rep 2019; 9:15028. [PMID: 31636300 PMCID: PMC6803693 DOI: 10.1038/s41598-019-51407-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Accepted: 09/24/2019] [Indexed: 11/29/2022] Open
Abstract
In using nanostructures to design solar thermal absorbers, computational methods, such as rigorous coupled-wave analysis and the finite-difference time-domain method, are often employed to simulate light-structure interactions in the solar spectrum. However, those methods require heavy computational resources and CPU time. In this study, using a state-of-the-art modeling technique, i.e., deep learning, we demonstrate significant reduction of computational costs during the optimization processes. To minimize the number of samples obtained by actual simulation, only regulated amounts are prepared and used as a data set to train the deep neural network (DNN) model. Convergence of the constructed DNN model is carefully examined. Moreover, several analyses utilizing an evolutionary algorithm, which require a remarkable number of performance calculations, are performed using the trained DNN model. We show that deep learning effectively reduces the actual simulation counts compared to the case of a design process without a neural network model. Finally, the proposed solar thermal absorber is fabricated and its absorption performance is characterized.
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Affiliation(s)
- Junyong Seo
- Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, 34141, South Korea
| | - Pil-Hoon Jung
- Department of Materials Science and Engineering, Korea University, 145 Anam-ro, Sungbuk-gu, Seoul, 02841, South Korea
| | - Mingeon Kim
- Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, 34141, South Korea
| | - Sounghyeok Yang
- Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, 34141, South Korea
| | - Ikjin Lee
- Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, 34141, South Korea
| | - Jungchul Lee
- Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, 34141, South Korea
| | - Heon Lee
- Department of Materials Science and Engineering, Korea University, 145 Anam-ro, Sungbuk-gu, Seoul, 02841, South Korea.
| | - Bong Jae Lee
- Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, 34141, South Korea.
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Obtaining Silicon Oxide Nanoparticles Doped with Fluorine and Gold Particles by the Pulsed Plasma-Chemical Method. JOURNAL OF NANOTECHNOLOGY 2019. [DOI: 10.1155/2019/7062687] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
This paper presents a study on pulsed plasma-chemical synthesis of fluorine- and gold-doped silicon oxide nanopowder. The gold- and fluorine-containing precursors were gold chloride (AuCl3) and sulphur hexafluoride (SF6). Pulsed plasma-chemical synthesis is realized on the laboratory stand, including a plasma-chemical reactor and TEA-500 electron accelerator. The parameters of the electron beam are as follows: 400–450 keV electron energy, 60 ns half-amplitude pulse duration, up to 200 J pulse energy, and 5 cm beam diameter. We confirmed the composite structure of SixOy@Au by using transmission electron microscopy and energy-dispersive spectroscopy. We determined the chemical composition and morphology of synthesized SixOy@Au and SixOy@F nanocomposites. The material contained a SixOy@Au carrier with an average size of 50–150 nm and a shell of fine particles with an average size of 5–10 nm.
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Liu C, Zhang D, Liu Y, Wu D, Chen L, Ma R, Yu Z, Yu L, Ye H. Numerical Study of an Efficient Solar Absorber Consisting of Metal Nanoparticles. NANOSCALE RESEARCH LETTERS 2017; 12:601. [PMID: 29168003 PMCID: PMC5700009 DOI: 10.1186/s11671-017-2363-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Accepted: 11/03/2017] [Indexed: 06/07/2023]
Abstract
We propose and theoretically investigate an efficient solar light absorber based on a multilayer structure consisting of tungsten nanoparticle layers and SiO2 layers. According to our calculation, average absorbance over 94% is achieved in the wavelength range between 400 and 2500 nm for the proposed absorber. The excellent performance of the absorber can be attributed to the localized surface plasmon resonance as well as the Fabry-Perot resonance among the metal-dielectric-metal layers. We compare the absorbing efficiency of tungsten nanosphere absorber with absorbers consisting of the other metal nanoparticles and conclude that iron can be an alternative material for tungsten in solar energy systems for its excellent absorbing performance and the similar optical properties as tungsten. Besides, a flat multilayer absorber is designed for comparison, and it is also proved to have a good absorbing performance for solar light.
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Affiliation(s)
- Chang Liu
- State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Post and Telecommunications, Beijing, 100876, China
| | - De Zhang
- Information Science Academy of China Electronics Technology Group Corporation, Beijing, 100876, China
| | - Yumin Liu
- State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Post and Telecommunications, Beijing, 100876, China.
| | - Dong Wu
- State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Post and Telecommunications, Beijing, 100876, China
| | - Lei Chen
- State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Post and Telecommunications, Beijing, 100876, China
| | - Rui Ma
- State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Post and Telecommunications, Beijing, 100876, China
| | - Zhongyuan Yu
- State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Post and Telecommunications, Beijing, 100876, China
| | - Li Yu
- State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Post and Telecommunications, Beijing, 100876, China
- School of Science, Beijing University of Post and Telecommunications, Beijing, 100876, China
| | - Han Ye
- State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Post and Telecommunications, Beijing, 100876, China
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